Specifications

Vehicle System Testing & Adjusting 57
Tilt and Sideshift Relief Valve Check and
Adjustment
1. Start the engine and activate the hydraulics until
the hydraulic oil is at the normal operating
temperature. Put the mast in the full tilt back
position.
2. With the engine at high idle, hold the tilt control
lever in the full tilt back position and watch the
gauge. The gauge indication is the pressure that
opens the relief valve.
3. The correct pressure setting is shown in the chart.
4. If an adjustment to the relief valve setting is
necessary, loosen nut (5).
Relief Valve Adjustment
(5) Locknut. (6) Stud.
5. Turn setscrew (6) clockwise to increase or
counterclockwise to decrease the pressure
setting of the relief valve.
6. Tighten the locknut and check the pressure
setting again for correct adjustment.
Flow Control Valve Adjustment
The tilt and first attachment speeds can be adjusted
at the control valves. They can be adjusted by
turning the plug in the hydraulic control valve body.
The lift speed can not be adjusted. Do the
procedure that follows to change the flow control
assembly.
Hydraulic oil, under pressure can remain in the
hydraulic system after the engine and pump
have been stopped. Personal injury can be
caused if this pressure is not released before
any work is done on the hydraulic system. To
prevent possible injury, lower the carriage to
the ground, turn the engine off and move the
control levers to make sure all hydraulic
pressure is released before any fitting, plug,
hose or component is loosened, tightened,
removed or adjusted. Always move the lift truck
to a clean and level location away from the
travel of other machines. Be sure that other
personnel are not near the machine when the
engine is running and tests or adjustments are
made.
1. Remove the nut from the slotted tie-stud of main
hydraulic valve
2. Remove the slotted tie-stud from the valve.
3. Use Hex Wrench (6mm or 1/4 inch), turn the flow
control adjuster (1) clockwise to increase the flow
or counterclockwise to decrease the flow.
4. Assemble the tie stud in the valve. Torque the
stud to 40.5 ± 2.5 N·m (360 ± 24 lb·in)
5. Reinstall the nut on the tie bolt.
WARNING